Maybe i have some serious searchfu, but i don’t see a big selection issue on amazon.ca with over 100 options to choose from, plus i see several with free shipping. The Levity DZS15 is a dimmer if you want to avoid issues buy a switch that is not a dimmer, on/off only. I personally have a GE 45603 controlling a 3w LED load and Jasco/GE 45609, 12722, 45856 controlling a 12w LED load w/o issue and one of those is a dimmer.
Most zwave dimmer switches require a 40w minimum load. A typical G9 LED replacement is only 2.5 watts. So it gets really difficult. This is the typical Christmas tree light problem. There just aren’t enough bulbs.
For a chandelier fixture, some people will put one incandescent into the mix. (A G9 incandescent is typically 40 W. So just one will do it.)
Otherwise, as was suggested, you just have to try them and see.